package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

@RestController
@Slf4j
@RequestMapping("/employee")
public class EmployeeController {

    private EmployeeService employeeService;

    @Autowired
    public EmployeeController(EmployeeService employeeService) {
        this.employeeService = employeeService;
    }

    /*
     * 员工登录
     * */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee) {
        //1.将页面提交的密码进行md5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        //2.查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername, employee.getUsername());
        Employee one = employeeService.getOne(queryWrapper);

        //3.如果没有查询到则直接返回登录失败
        if (one == null) {
            return R.error("用户名不存在");
        }

        //4.密码比对
        if (!one.getPassword().equals(password)) {
            return R.error("密码错误");
        }

        //5.查询员工状态
        if (one.getStatus() == 0) {
            return R.error("该账户已被禁用");
        }

        //6.登陆成功
        request.getSession().setAttribute("employee", one.getId());
        return R.success(one);
    }

    /*
     * 员工登录
     * */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request) {
        //清理Session
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }

    /*
     * 新增员工
     * */
    //因为前台路径只有/employee，所以不用填写值
    @PostMapping
    public R<String> save(HttpServletRequest request, @RequestBody Employee employee) {
        log.info("新增员工，员工信息：{}", employee.toString());
        //设置初始密码123456并进行加密
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

/*        employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());

        Long empId = (Long) request.getSession().getAttribute("employee");
        employee.setCreateUser(empId);
        employee.setUpdateUser(empId);*/



        employeeService.save(employee);

        return R.success("新增员工成功");
    }

    /*
     * 员工信息分页查询
     * */
    @GetMapping("/page")
    public R<Page> page(Integer page, Integer pageSize, String name) {
        log.info("page = {},pageSize = {},name = {}", page, pageSize, name);
        //构造分页构造器
        Page pageInfo = new Page(page, pageSize);
        //构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper();
        //添加过滤条件
        queryWrapper.like(StringUtils.isNotEmpty(name), Employee::getName,name);
        //添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);
        //执行查询
        employeeService.page(pageInfo, queryWrapper);
        return R.success(pageInfo);
    }

    /*
    * 根据ID修改员工信息
    * */
    @PutMapping
    @Transactional
    public R<String> update(HttpServletRequest request,@RequestBody Employee employee){
        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser((Long) request.getSession().getAttribute("employee"));
        log.info("线程id为:"+String.valueOf(Thread.currentThread().getId()));
        employeeService.updateById(employee);
        return R.success("员工信息修改成功");
    }

    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id){
        log.info("根据id查询员工信息");
        Employee employee = employeeService.getById(id);
        return R.success(employee);
    }
}
